package control;

import java.io.IOException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import dao.DAOUsuario;

import model.Administrador;
import model.Aluno;
import model.Usuario;

/**
 * Servlet implementation class RedirectServlet
 */

public class RedirectServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public RedirectServlet() {
		super();
		// TODO Auto-generated constructor stub
	}

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		DAOUsuario daouser = new DAOUsuario();
		String login = request.getParameter("login");
		String senha = request.getParameter("senha");
		Usuario u = daouser.findByLogin(login);  
		if (u!=null){
			if (u.getSenha().equals(senha)){
				HttpSession sess = request.getSession();
				sess.setAttribute("usuario", u);
			}
			else{
				response.sendRedirect("login.jsp?err=1");
				return;
			}
			String url="";
			if (u instanceof Administrador)
				url="painel.jsp";
			else if (u instanceof Aluno)
				url="alunos.jsp";
			else
				url="professores.jsp";
			RequestDispatcher view = request.getRequestDispatcher(url);
			view.forward(request, response);
		}
		else
			response.sendRedirect("login.jsp?err=2");		
	}
}

